Storm window



March 12, 1963 v B. E. MENDELsoHN 3,080,620

STORM WINDOW Filed Oct. 50, 1959 3 Sheets-Sheet 1 lll :auf HHHUMIES March 12, 1963 B. E. MENDELsoHN STORM WINDOW 3 Sheets-Sheet 2 Filed 001:. 30, 1959 March l2, 1963 B. E. MENDELSOHN STORM WINDOW 3 Sheets-Sheet 3 Filed Oct. 30, 1959 FIG. lO

FIG.

FIG. I3

INVENTOR. BERNARD E. MENDELSOHN BY i r4/@f mi, QM/ SWW/4 ATTOBN EYS dd Patented Mar. l2, i953 ice 3,680,620 STGRM WENDW Bernard E. Mendelsohn, 7 Livingston St., Dorchester, Mass. Filed 9ct. 39, i959, Ser. No. 849,799 7 Claims. (Cl. Ztl-55) This invention relates to storm windows and more particularly comprises a new `and improved storm window construction which provides a weather tight seal of the sashes in the frame but allows each of the glass and screen sashes to be removed from the frame without diflficulty.

At the present time, the multi-sash aluminum storm windows commonly used fall into one of two general classes. Perhaps the older class is the track-type storm window which includes several tracks or channels in the frame which engage the sides of the sashes, guiding each independently in the frame. In this type of construction, the front and rear faces of the sides of the sash may abut against the sides of the channels in the frame so that a substantially weather tight seal is formed between the sides of the sash and the frame. While these storm windows function very well Vagainst the elements, it is extremely diiiicult to remove the sashes from the frame. To remove the sashes, either a portion of the track must be removed or some means must be provided to allow the sash to move more deeply into the track on one side to ree the other side of the sash from its track. Either of these commonly used methods is particularly susceptible to failure. Dust and dirt regularly collect in the tracks making it ditiicult to either remove a portion of the track or shift the sashes translationally in them. Moreover, springs are generally employed in the tracks to maintain a proper frictional contact between the sashes and frame so that the sash will remain in the desired position, that is, partially open or closed. These Springs either fatigue so that the sashes will not remain in a raised position or alternatively bind in the track to make it extremely dithcult to move the sashes.

The second general class of multi-sash aluminum storm window is known as the tilt-type window. ln this type of window, the sides of each sash are not enclosed within channels or tracks in the frame, but rather, run on bearing surfaces provided by a single ange on each side lying outside the sash. The inner face of the sides of the sash are fully exposed, that is, they are not overlapped bv flanges in the frame as in the track-type window which forms a complete track for the sashes. The sashes are retained in the bearing surfaces of the frame by means of outwardly extending bosses, pins, bolts, or similar devices carried by the sashes which engage recesses formed in the frame beyond the sash sides. While the sashes in the tilt-type window may readily be removed from the frame by retracting one or more of the several bosses, pins, bolts, etc. from the recesses, they are not as eiective against t'ie elements as the track-type window. Wind and driving rain or snow directed against the outside of the windows tend to push the sashes inwardly od the bearing surfaces to open a passage for the cold and dampness between the sashes and the frame. Furthermore, particularly with large windows, warping or bending of a sash creates a space between the bearing surface of the frame and the sides or" the sash through which cold and damp air may flow.

The primary object of my invention is to provide a storm window having the attributes of both track-type and tilt-type windows without their accompanying limitations.

To accomplish this and other objects, the storm windou of my invention includes three sashes mounted within a frame having exposed bearing surfaces upon which the sashes ride, and also having beyond those surfaces tracks which receive anges coextensive with and secured to the sides of the sash. The ange on one Side of each sash extends into the track on its side of the frame whenever the sash is in place. The other side of the sash carries a movable flange which extends outwardly from it and when in its extended position lies within the track on that side of the frame. This movable flange is controlled by an actuating mechanism which permits it to be withdrawn against its bias from the track. When withdrawn from the track, the window may be removed from the frame by pivoting it inwardly about an axis c0- incident with the lixed flange on the other side of the sash.

The flanges on each side of the sash may or may not t tightly within the tracks on the sides of the frame. While a tight t may seem to be more desirable, experience indicates that if the flanges t tightly within the tracks, after prolonged use the tracks will bind on the flanges to make movement of the sashes in the frame diicult. Furthermore, a tight t of the flanges in the tracks would necessitate very precise dimensional control of the frames and sashes during their construction to permit easy insertion and withdrawal of the flanges in and from the tracks when the sashes are mounted in and removed from the frame. The frames of the storm windorn being attached to the outside wooden casings, follow the pitch of the casings, which changes with varying weather conditions. Since the pitch of the frames changes, a certain amount of tolerance is required to accommodate the flanges without bending them.

Because in the preferred embodiment of my invention the flanges preferably iit loosely within the tracks, other means are provided to hold the sashes on their bearing surfaces. Extending outwardly from the top of each side of the sashes are bosses which bear against the outer face of the inner sides of lthe tracks, and at the bottom or" each side of the sashes are outwardly extending latches which also bear against the inner sides of :the tracks. The latches co-operate with the bosses to hold the frame lirmly against the bearing surfaces. As will become apparent in the following detailed description, the flanges prevent any appreciable separation of the sash sides from the bearing surfaces of the frame intermediate the top and bottom of each sash. The latches serve lthe additional function of retaining the sashes at any desired height within the frame. A plurality of vertically spaced slots are formed on the `outer surface of the inner wall of each track to receive the latches and prevent the sashes from moving vertically within the frame unless the latches are withdrawn from the tracks.

The boss extending from the side of the sash carrying the movable flange is itself movable so that it may be withdrawn from the track when the sash is to be removed. The actuating mechanism `for the movable boss may `co-operate with the latch at the bottoni of the same side of the sash to withdraw the ilange from lthe track when the sash is to be removed.

These `and other objects and features of my invention will be better understood and appreciated from the following detailed description of several embodiments thereof, selected for purposes of illustration and shown in the accompanying drawing, in which:

FIGURE l is a perspective -view from the inside of a storm window constructed in accordance with my invention;

FIGURE 2 is a perspective view from `the outside of a portion of lthe side of a frame which may be used in my invention;

FIG-URE 3 is an inside elevation view, partly in section, of a portion of a sash of a storm window constructed in accordance with my invention;

FIGURE 4 is a typical cross section of one side of a storm window constructed in accordance with my invention;

FIGURE 5 is a perspective View of the lower corner of the sash shown in FIGURE 3;

FIGURE 6 is an inside elevation view partly in section of a portion of a sash constructed in accordance with the preferred embodiment of my invention;

' FIGURE`7 is a typical cross section of one side of a storm window including two sashes identical to that shown in FIGURE 6;

FIGURE 8 is an inside elevation view of the lower left side of a sash constructed in accordance with my invention;

FIGURE 9 is a cross sectional view of the side of a storm window including two different sashes, each constructed in accordance with my invention;

FIGURE 10 is a cross sectional view of a portion of still another storm window constructed in accordance with my invention;

FIGURE 11 is a cross sectional view ot the windows shown in FIGURES 6 yand 10, said section being taken in the plane of the top of the sash;

FIGURE 12 is a cross sectional view of the windows shown in FIGURES 6 and 10, but lookin-g upwardly in the plane of the bottom of -the sash; and A FIGURE 13 is a cross sectional view taken along the corresponding section line of FIGURE l2.

The embodiment of my invention shown in FIGURES 1-5 includes in its general organization -a window frame having sides 22 and 24 and a top and bottom 26 and 28, respectively, Disposed within the frame 20 are top and bottom window sashes and a screen sash 34. The window and screen sashes are movable up and down in the frame 20 -to permit opening and closing of Vthe storm window and positioning of the screen either in an upper or lower position. Triple sash windows of this general variety are well-known in the art. However, as #will be explained in detail below, the manner in which the sashes co-operate with the side members of the frame is unique and embodies applicants invention.

The frame 20 shown in perspective in FIGURE 2 is adapted to be secured to the frame of the permanent window of the building over which the storm window -is to be installed. The view of FIGURE 2 is taken from the outside of the storm window and shows alportion of the right side of the frame. A wide outwardly extending ange 36 forms part of the frame 20, extends about its entire periphery, and may be screwed, bolted or secured by other means to Ithe permanent window frame of the structure. The side 24 of the frame includes four vertically oriented inwardly extending flanges 38, 40, 42 and 44 parallel with one another. The outermost flange 38 extends inwardly beyond the flange 40, ange 40 extends inwardly beyond the inner edge of flange 42, and flange 42 in turn extends inwardly beyond flange 44 to provide a stepped arrangement of flanges as is evident in several of the iigures. The inner edges of the anges 40, 42 and 44 bear lips 46, 48 and 50 respectively which are turned -in an outwardly direction and terminate short of the inside surface of the next outermost llange. It will be recognized that side 24 may readily be extruded from aluminum or other similar stock in great lengths and thereafter cut to the desired size.

The side members 22 and 24 are identical and face one ano-ther on the opposite sides of ythe frame. Thus, the outside ange of the side 22 is disposed parallel to the flange 38 of side 24, and similarly, the succeeding inner flanges of side 22 are parallel to the ilanges 4t), 42 and 44 of side 24.

The portion of the inside surface 52 of llange 38 lying inwardly of the `lip 46 forms a bearing surface on which one side of one sash runs. Similarly, the inside surface 54 of flange 40 and the inside surface 56 of ange 42, and more particularly the portions of those surfaces which extend inwardly beyond `the lips 48 and 50, respectively, form bearing surfaces upon which the other sashes run. Thus, because of the stepped arrangement of the anges, the three sashes are of different width, the outermost of `the sashes being narrowest. In such an arrangement, the innermost sash carries screening while the other sashes carry glass.

In FIGURES 3-5, I have illustrated in detail one of the sashes. Except for their different widths, Iall of the sashes are substantially identical. The sash 30 illustrated includes a side member 60 and top and `bottom members 62 and 64, respectively. The other side member 66 is shown in FIG- URE 9. Referring to FIGURES 3 and 4, it will be noted that the side member 60 is generally H-shaped in cross section, having an outside panel 70, an inside panel 72, and a cross member 74. In the inner channel 75 formed by the H-shaped section is a gasket 76 made of rubber or other similar material, which engages the periphery of the glass pane 78.

Disposed within the outer channel 79 of the H-shapcd section of side member 60 is a vertically oriented ange 80 which is substantially coextensive with the entire side memberand having a relatively thin outer side 82 which extends out of the channel 79 and an inner thicker portion 84 disposed within the channel. In FIGURE 4, the llange 80 ofthe outer sash is shown in its outermost position wherein the narrow side 82 extends out of the H-shaped section and engages the outside edge of the lip 46 of the side member 24 of frame 20. The flange 80 is biased to the position illustrated by means of several bow-shaped springs 86 secured intermediate their ends to the inner edge of the thicker section 84 of the flange 80 while the ends of the spring bear against the base of the channel 79. While the flange 80 may enter the track defined by adjacent angesin the frame, the side 60 of the sash is wider than the track opening and, therefore, cannot enter it.

An elongated opening 90 is formed in the inside panel 72 of the side member 60 and this opening is covered by a plate 92 provided with several upwardly and inwardly inclined slots 94, one of which is clearly shown in FIG- URE 3. Extending through that slot is a flat headed pin 96 secured at its inner end to the thicker rearward portion `84 of the flange 80. Thus, an upwardly directed force applied to the llange 80, will cause the ange to move inwardly as well as upwardly in the channel 79 against the bias of the springs 86. The channel 79 is deep enough to permit the narrower portion 82 of the flange 80 to be drawn inwardly of the outer edges of the panels 70 anl 72.

As shown in FIGURE 3, the side member 60 and the top member 62 of the sash 30 are connected together by means of a bracket 100. The vertical arm 102 of the bracket ts inside the channel 79 of the side member 60 -above the top of the ilange 80 and is staked as suggested at 104. The top member 62 of the sash, which may have the same cross sectional conguration as the side member 60, receives the horizontal arm 106 ofthe bracket 100 through its side opening 108, and the horizontal arm rnla/ also be staked in place in the manner suggested at A similar bracket 112 is employed to connect the side and bottom members 60 anl 64 of the sash. The bracket 112 is hollow throughout its length, that is, both in its horizontal and vertical arms 114 and 116, respectively. The passage 118 extending through the horizontal arm 114 is open at the right end as suggested at 120 to provide an opening through which the tapered head 122 of a sliding latch 124 may extend. The latch 124 is provided with a thumb actuator 126 at its inner end beyond the end of the bracket 112. The central portion of the latch 124 is provided with a cavity 128 housing a spring 130 which acts in compression to force the head end of the latch out lthat side of the sash from the frame.

soeces@ of the opening 12d. One end of the spring 13d is secured to the `bracket body as suggested at 132 while the other end of the spring 139 bears against the outer end of the cavi-ty 128 to force the lia-tch outwardly as suggested. The thumb actuator 126 provided at the left end of the latch provides means to move latch 12d against the bias of spring 13d so that its tapered head 122 may be drawn within the body of the bracket.

The upper surface 13d of the latch 124 is provided with an upstanding cam surface i3d having a tapered face 13S which bears against the bottom of a downwardly extending ann 141i) formed as an integral part of the flange St? in the channel 79. The arm 140 extends through the hollow vertical portion 116 of bracket i12 and rests on the tapered face 138 of Ithe cam `so that when the latch X24 is drawn inwardly against the bias of the spring 13d, the flange Si) is forced upwardly and inwardly by Virtue of the pin and slot connection 94, 96 to retract the flange wi-thin the channel 79 of the side member of the sash.

As noted above, the other side member 6d of the sash 30 is shown in FIGURE 9. lt will be noted in that figure that formed as an integral part of the `side member 65 is an outwardly extending flange 150 substantially coextensive with that side of the sash and that the llange d is immovable with respect to the side member 66. Thus, the sash 30 includes a xed ilange lll'on one side .and a retractible ilange S0 on the other.

Having described the details of the sash Btl and frame 2i?, the operation of the storm window may now readily be appreciated. lt has been stated that the side panel "/'tl of side member 6? of one sash bears against the inside face 54 of the flange 40 and that the outer edge of the side member dit lies inwardly of the lip #t8 connected to the outer edge of llange 42 of the frame. Similarly, as shown in FIGURE 9, the outer edge of other side member 66 of the sash 3d lies inwardly of the lip 48 of the other side 22 of the frame 2li and that the outside panel 79 lies against the rear bearing surface 54 of the flange 40". The llange lill 4formed on the side member 66 of the sash eX- tends into the track formed between flanges 40 and 42 and bears against the edge ofthe lip 48'10 retain the panel 'i0' of lthe side member 6e against the bearing surface 54'. Similarly, on the other side of the frame, the flange @il and more particularly its narrow side 82 extends into the track formed between ilanges lll and t2 and bears against the edge of the lip 43 when the ilange 30 is in its extended position to retain the panel 76 aaginst the bearing Surface 54;. Because the sides of the sash are thicker than the tracks formed by the adjacent flanges, the sashes cannot shift translationally into one o1` the other track to free the flange on the opposite side of the sash. The latches 124 disposed at the bottom of each side of the sash also serve to hold tre sides of the sash against the bearing surfaces of `the frame. The latch serves yet another function. it will be noted in FIGURE l as well -as in FlGURE 13 that a plurality of notches ldd are formed in the lips of the franges of the frame. These notches on each side of the frame receive the tapered heads E22 of the latches iZd to retain the sash at any selected elevation within the frame 2d.

To remove the sash from the frame, the operator actuates the latach Z124 on the site of flange Si), and this action causes the tapered head 122 of the latch to be moved inwardly beyond the lip 48 and at the same time causes the flange Si) to move out ot' the track between flanges 4l) and @iS-, oii the lip 48, and upwardly and inwardly within the channel 79 of the side member to free Having done this, the operator may pivotally swing the window inwardly about the vertical axis formed by the ilange 156 within the track on the other side of the frame and thereafter remove the tlange l'tl from the frame to free the window.

cess on their outer surfaces which carry a pile of weather d stripping lea to enhance the seal between the sash and the frame. It will also be appreciated that when a force is applied against the outside of the sash, a firmer contact is provided between the anges titl and 156 and the inner edges of tl e lips 48 and 48', respectively, to enhance the weather tight seal of the window.

in FlGURES 6-8, l have shown the preferred embodiment of my invention. In this embodiment, the frame Ztl is identical to that employed in the tirst embodiment and, therefore, needs no additional description. 'Only the sash has been slightly modified, and this will be described in detail. The sash i7@ shown in FTGURE 5 in cludes H-shaped side members 172 and 174 as well as H-shaped top and bottom members 176 and 178, respectively. Disposed within the outwardly facing channel 179 of the H-shaped section of the side member 172 is a ilangc 189 which is free to move in and out of its channel between limits deiined by pin 182 anchored to the side walls of the channel and which extends through horizontal slot 184 in the flange. The flange 18% which is substantially coextensive with the full length of the side ot' the sash, as are the flanges and 15) of the above described ernbodiment (FIGURES 3 and 6 show merely the lower and upper corners of the sash and the major portion of the sash is cut out), carries a pair of arms E86 and 188 which extend respectively upwardly and downwardly to the top and bottom members and i178 of the sash. These arms extend through the hollow brackets lli@ identical to those shown in FIGURE 3. Disposed in the bracket llfl joining the bottom member 178 and the side member 172 is latch 199 substantially identical to the latch 12d except that it does not include the cam 136. Rather, the bottom end of the arm 188 of the flange it) is secured to the latch 19t) so that when the latch 1.9i) is drawn inwardly by means of its thumb actuator 192, the flange 1S() is drawn inwardly with it. A similar latch 194 is disposed in the horizontal arm of the top bracket 114. The latch 194 is secured to the top of the upwardly extending arm ld of the llange 130` so that when this latch is withdrawn it also serves to withdraw the flange 18o. Thus, the latches i90 and 194 together serve to pull the liange ld within the channel of the side member i172 of the sash. The outer end of the latch 19d is provided with a boss 1% rather than a tapered head.

I have illustrated a portion of the sash of FIGURE 6 in FIGURE 9. It will be appreciated that the side of t'ne sash bearing the iixed flange may take substantially any form and that in FIGURE 9 but two arrangements are illustrated. Thus, while l have indicated that FIG- URE 8 shows the left side of the sash of FIGURE 6, that side could be identical to side 66 of sash 36. In FIGURES 8 and 9, the side 174 includes a fixed ilange 19S inserted into the outwardly facing channel. ecause the iiange is fixed, it is not secured to latch 19d, and the latch moves inwardly and outwardly in the bracket llil independently of it.

lt will be noted in FIGURE 7 that the -tlange 1S@ does not bear against the edge of the lip i3 of the frame 2Q but rather is spaced from it. While the flange in its extended position reaches into the track beyond the bearing surface 5d, it does not serve to retain the side mem-- ber of the sash tightly against the bearing surface. This function is performed by the boss 1% and the tapered head 122 of the latch i943. ln FiGURES ll and l2, it will be noted that the boss we bears against the edge of the lip 48, and similarly, the tapered head 122 bears against the outside face of flange d2. (lt will be noted in FIGURE 13 that the head 122 is seated within notch Htl). ln a similar manner, the upper end tot the side 174 of the sash carries a boss (not shown) which cooperates with the head 12,2 of the latch t9@ to retain that side of the sash on its bearing surface of frame 2li. To withdraw the sash from the frame, the latches 19d and E94 must be actuated against their springs to withdraw thehead H2 and the boss 1% inwardly away from `than to thel interior bodies of the latches.

the edge of the lip 48. This action also withdraws the flange 180 from the track beyond the bearing surface to free that side of the sash from the frame. By pivoting the sash inwardly about the fixed flange after the latches have been actuated, the sash may be withdrawn in the same manner as that described fully in connection with the first embodiment illustrated.

The reader will immediately recognize thaat because only two points of contact are provided in each side of the sash within the frame, the sash will run freely on its bearing surfaces of the frame. However, the flanges 180 and 198 which enter into the channels will effectively block the seepage of any cold air about the sash within the frame. A strong wind or driving rain or snow directed against the outer surface of the sash will tend to move the flanges 80 and 19S against the edges of lips 43 and 48' so as to effectively produce a seal between the sash and frame throughout substantially the full height of the sash. Thus, when a seal is most necessary due to storm conditions, a seal will in fact be created.

In FIGURE still another embodiment of my invention is illustrated. In this embodiment, the movable flange is assembled in yet another manner within the side member of the sash. In detail, the sash includes a side member 200 having an H-shaped cross section. The outer ends of the inside and outside panels 202 and 204 of side member 200 have inwardly facing stops 206 and 20S between which the flange 210 extends. The inner edge of the flange 210 is provided with an enlarged head 212 which co-operates with the stops 206 and 208 to retain the flange within the channel of the H-shaped section. The flange 210, just as flange 180, does not require a spring to urge it to its extended position suggested in the dotted line showing 214 because in use it would be connected at its ends to latches of the type previously described which themselves are biased outwardly by springs forming part of the latch mechanism. As in the embodiment of FIGURE 6, the flange 210 does not rest firmly against the inner edge of the lip 48 of the frame so that movement of the sash within the frame is not hampered by binding. The boss 196 and the tapered head 122 formed at the ends of the latches will serve to retain the sides of the sash on the bearing surfaces of the frame.

From the foregoing description, it will be apparent that numerous modifications may be made of my invention without departing from its spirit. For example, many different arrangements may be employed to secure the movable flange within the channel formed in the frame of the sash. Furthermore, the particular configuration of the frame itself is unimportant. My invention finds application with the track-type window frames described in the introduction and which do not have the stepped arrangement. In such a frame, only the flanges on each side of the sash should extend into the tracks Provided in the frame. 'Ihe flanges may be so dimensioned that they fit tightly within the tracks, thus eliminating the need for bearing surfaces independent of the tracks. To withdraw the window from the frame, the movable flange on one side of the sash would be withdrawn into its channel, and the window thereafter would be free to pivot outwardly from the frame.

Regardless of the type of frame used or the manner in which the movable flange is secured in the channel of the sash, if the flange may be drawn into the channel and out of the track of the frame so that it does not interfere with pivotal movement of the sash in the frame, the sash may be readily removed. Thus, it will be appreciated that applicants invention combines the advantages of the track-type and tilt-type windows by providing a sash which may readily be removed from its frame and which forms effectively a weather tight seal along the sides of the sash when mounted in the frame.

My invention may be further modified by connecting the movable flange to the boss 196 and head 122 rather vBy such an arrangement, the movable flange may extend the full length of the side of the sash rather than terminate an inch or two short of the top and bottom. It may also prove desirable to attach the top of the flange loosely to the latch carrying the lboss so that when the lower latch bearing the head 122 is retracted to raise or lower the sash, the entire flange is not withdrawn from the track. Thus, in the embodiment of FIGURE 6 the arm 186 could be loosely connected at its top to the latch 194. When connected in this manner, retraction of the latch 19() to move the sash would cause the flange 180 to pivot about the top of the arm 186 so that the flange would swing inwardly at the bottom and its upper portion would remain in the track of the frame. Only when the sash is to be removed would the entire flange be retracted by actuation of both latches 190 and 194.

Because my invention lends itself to modification, it is not my intention to limit the breadth of my invention to the specific embodiments illustrated and described. Rather, it is my intention that the scope of my invention be determined by the appended claims and their equivalents.

What I claim as new and desire to secure by Letters Patent of the United States is:

l. A storm window comprising a frame adapted to be secured to a permanent window frame and having a pair of side members facing one another, each of said side members having four parallel and vertically disposed flanges arranged in stepped relationship and with the outermost flanges of the two side members being closest together, the second, third and fourth flanges on the side members numbered consecutively from the outermost flange each being slightly further apart than the next outer flanges, a first sash adapted to ride on the inner surfaces of the outermost flanges of the side members and being narrower than the space between the second flanges of the side members, a pair of bosses secured to and extending outwardly from the top of each side of the sash and bearing against the outer faces of the second flanges of the side members, retractable latches secured to and extending outwardly from the bottom of each side of the sash and biased to a position wherein they bear against the outer faces of the second flanges of the side members and co-operating with the bosses to retain the sash against the inner surfaces of the outermost flanges, second and third sashes disposed respectively on the inner surfaces of the second and third flanges of the side members and having pins and latches for retaining thc second and third sashes on said inner surfaces in thc manner of the first sash, a flange substantially coextensive with, fixed to and extending outwardly from one side of the first sash, said fixed flange extending outwardly between the outermost and second flanges of the side member on that side of the sash, a channel formed in and extending substantially the full length of the other side of the first sash, a flange movably mounted in the channel, means disposed in the channel biasing the movable flange outwardly between the outermost and second flanges of the side member on that side of the first sash, actuating means mounted on the first sash and connected to the movable flange for drawing the flange into the channel, actuating means mounted on the first sash and connected to the boss and latch on the side of the movable flange for moving the boss and latch off the second flange, fixed and movable flanges secured to the second and third flanges and extending between the second and third, and third and fourth flanges of the side members in the manner of the flanges of the first sash, and actuating means for the bosses, latches and movable flanges of the second and third sashes.

2. A storm window as defined in claim l wherein the movable latch on the side of each sash bearing the movable flange comprises the actuating means for the movable flange.

3. A storm window as defined in claim 2 further characterized by means formed on the second, third and fourth fianges on each side member of the frame so-operating with the latches on me first, econd and third sashes, respectively, for retaining said sashes in preselected vertical positions on the inner surfaces of the outermost, second and third flanges, respectively.

4. In a storm window, a frame, a sash movable up and down within the frame, said frame having side members each including a pair of parallel yand vert-ically oriented flanges extending inwardly toward the opposed flanges of the other side member, one pair of opposed flanges on the side members being spaced further apart than the other pair, said sash being Wider than the closer spaced pair of opposed flanges and narrower than the other opposed pair of flanges of the -side members, an outwardly extending fixed flange secured to and substantially coextensive with one side of the sash and disposed between the pair of fianges on the side member of the frame on that side of the sash, a movable flange mounted on the other side of the sash and biased to a position wherein it extends between the flanges on the other side member, said fixed and movable flanges fitting loosely within the flanges of the frame, means independent of the fixed and movable flanges on the sash for retaining said sash within the frame when it is raised and lowered in the frame, and means for moving said movable flange against its bias to withdraw said movable liange from between said fianges on said other side member.

5. in a storm window, a frame, a sash movable up and down within the frame, said frame having side members each including a pair of parallel and vertically oriented iianges extending inwardly toward the opposed flanges of the other side member, one pair of opposed anges on the side members being spaced further apart than the other pair, said sash being wider than the closer spaced pair of opposed flanges and narrower than the other opposed pair of flanges of the side members, means secured to and extending outwardly from one side of the sash and disposed between the pair of fianges on the side member of the frame on that side of the sash, a movable ange mounted on the other side of the sash and biased to a position wherein it extends between the fianges on the other side member, said movable flange fitting loosely within the flanges of the frame, means independent of the movable flange on the sash for retaining said sash within the trarne when it is raised and lowered in the frame, and means for moving said movable flange against its bias to withdraw Said movable flange from between said anges on said other side member.

6. -In a storm window, a frame, a sash movable up and down within the frame, said frame having side members each including a pair of parallel and vertically oriented flanges extending inwardly tow-ard the opposed flanges of the other side member, means secured to and extending outwardly from one side of the sash and disposed between the pair of franges on the side member of the frame on that side of the sash, a movable flange mounted on the other side of the sash and biased to a position wherein it extends between the flanges on the other side member, said movable flange fitting loosely within the flanges of the frame, means independent of the movable flange on the sash for retaining said sash within the frame when it is raised and lowered in the frame, and means for moving said movable flange against its bias to withdraw said movable ange from between said flanges on said other side member.

7. In a storm window, a frame, a sash movable up and down within the frame, said frame having side members each including a pair of vertically oriented anges extending inwardly toward the opposed flanges of the other side member, means secured to and extending outwardly from one side of the sash and disposed between the pair of flanges on the side member of the frame on that side of the sash, a movable fiange mounted on the other side of the sash and movable to a position wherein i-t extends between the fianges on the other side member, said movable flange fitting loosely within the flanges of the frame, means separate from the movable flange on the sash for retaining said sash within the frame, and means or moving said movable flange to withdraw said movable ange from between said flanges on said other side member.

References Cited in the file of this patent UNITED STATES PATENTS 451,826 Koontz May 5, 1891 729,665 Robbe lune 2, 1903 2,595,016 'Spector et al. Apr. 29, 1952 2,709,840 S-nobeck June 7, 1955 2,818,610 Pengelly Jan. 7, 1958 2,903,756 Conville Sept. l5, 1959 

7. IN A STORM WINDOW, A FRAME A SASH MOVABLE UP AND DOWN WITHIN THE FRAME, SAID FRAME HAVING SIDE MEMBERS EACH INCLUDING A PAIR OF VERTICALLY ORIENTED FLANGES EXTENDING INWARDLY TOWARD THE OPPOSED FLANGES OF THE OTHER SIDE MEMBER, MEANS SECURED TO AND EXTENDING OUTWARDLY FROM ONE SIDE OF THE SASH AND DISPOSED BETWEEN THE PAIR OF FLANGES ON THE SIDE MEMBER OF THE FRAME ON THAT SIDE OF THE SASH, A MOVABLE FLANGE MOUNTED ON THE OTHER SIDE OF THE SASH AND MOVABLE TO A POSITION WHEREIN IT EXTENDS BETWEEN THE FLANGES ON THE OTHER SIDE MEMBER, SAID MOVABLE FLANGE FITTING LOOSELY WITHIN THE FLANGES OF THE FRAME, MEANS SEPARATE FROM THE MOVABLE FLANGE ON THE SASH FOR RETAINING SAID SASH WITHIN THE FRAME, AND MEANS FOR MOVING SAID MOVABLE FLANGE TO WITHDRAW SAID MOVABLE FLANGE FROM BETWEEN SAID FLANGES ON SAID OTHER SIDE MEMBER. 